Backlight source control method, device and equipment and computer readable storage medium

Abstract

The invention relates to a backlight source control method, device and equipment and a computer readable storage medium. The method comprises the steps of determining a first area of a display panel corresponding to picture content in a to-be-displayed picture of head-up display equipment; a light-emitting element in the backlight source corresponding to the first area is controlled to be turned on, a light-emitting element in the backlight source corresponding to the second area is controlled to be turned off, the second area is other areas except the first area in the display area of the display panel, local backlight regulation and control on the backlight source are achieved, and only part of light-emitting elements are turned on; the backlight power consumption of the head-up display device is reduced, the service life of the display panel is prolonged, the light utilization rate of backlight is improved, the driving safety is improved, and the driving experience of a user is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a backlight control method, device, equipment and computer-readable storage medium. Background Art

[0002] In today's society, cars, as a means of transportation, are equipped with more and more new technologies to enhance the user's driving experience while meeting the user's travel needs. Head-up display (HUD) projects important driving data on the windshield, allowing users to see real-time driving information without lowering their heads, focusing more on observing road conditions, and to a certain extent reducing the possibility of danger caused by distracted attention.

[0003] In the prior art, the image source of the HUD usually includes a display panel (such as a TFT-LCD liquid crystal display) and a backlight source, and the backlight source provides backlight for the display panel. When providing backlight for the display panel, all light-emitting elements (such as light-emitting diodes (LEDs)) in the backlight source are usually controlled uniformly, for example, all light-emitting elements in the backlight source are lit, but lighting all light-emitting elements makes the backlight power consumption larger, and the light emitted by some light-emitting elements will be converted into heat by means of shielding, absorption, refraction, etc., resulting in an increase in the temperature of the display panel, shortening the service life, and reducing the light utilization rate of the backlight. Summary of the invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a backlight control method, device, equipment and computer-readable storage medium to enhance driving safety and improve the user's driving experience.

[0005] In a first aspect, an embodiment of the present disclosure provides a backlight source control method, including:

[0006] Determine a first area of ​​a display panel corresponding to a picture content in a picture to be displayed of a head-up display device;

[0007] The light-emitting elements in the backlight source corresponding to the first area are controlled to be turned on, and the light-emitting elements in the backlight source corresponding to the second area are controlled to be turned off, and the second area is other areas in the display area of ​​the display panel except the first area.

[0008] In a second aspect, an embodiment of the present disclosure provides a backlight source control device, including:

[0009] A determination module, configured to determine a first area of ​​a display panel corresponding to a picture content in a picture to be displayed of a head-up display device;

[0010] The control module is used to control the light-emitting elements in the backlight source corresponding to the first area to turn on, and control the light-emitting elements in the backlight source corresponding to the second area to turn off, wherein the second area is other areas in the display area of ​​the display panel except the first area.

[0011] In a third aspect, an embodiment of the present disclosure provides an electronic device, including:

[0012] Memory;

[0013] Processor; and

[0014] Computer programs;

[0015] The computer program is stored in the memory and is configured to be executed by the processor to implement the method as described in the first aspect.

[0016] In a fourth aspect, an embodiment of the present disclosure provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the method described in the first aspect.

[0017] In a fifth aspect, an embodiment of the present disclosure further provides a computer program product, which includes a computer program or instructions, and when the computer program or instructions are executed by a processor, the method described in the first aspect is implemented.

[0018] The backlight control method, apparatus, device and computer-readable storage medium provided by the embodiments of the present disclosure determine the first area of ​​the display panel corresponding to the picture content in the picture to be displayed of the head-up display device; control the light-emitting elements in the backlight corresponding to the first area to turn on, and control the light-emitting elements in the backlight corresponding to the second area to turn off, and the second area is the other area in the display area of ​​the display panel except the first area, thereby realizing local backlight control of the backlight source, turning on only some light-emitting elements, reducing the backlight power consumption of the head-up display device, increasing the service life of the display panel, improving the light utilization rate of the backlight, improving driving safety, and enhancing the driving experience of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 A flow chart of a backlight source control method provided in an embodiment of the present disclosure;

[0022] Figure 2 A schematic diagram of a display panel and a backlight source provided in an embodiment of the present disclosure;

[0023] Figure 3 A schematic diagram of a display area of ​​a display panel provided in an embodiment of the present disclosure;

[0024] Figure 4 A schematic diagram of a light emitting element array in a backlight source provided by an embodiment of the present disclosure;

[0025] Figure 5 A schematic diagram of the division of the display area provided in an embodiment of the present disclosure;

[0026] Figure 6 A flow chart of a backlight source control method provided in an embodiment of the present disclosure;

[0027] Figure 7 A schematic diagram of display content of a head-up display device provided in an embodiment of the present disclosure;

[0028] Figure 8 A schematic diagram of display content of a display panel provided in an embodiment of the present disclosure;

[0029] Fig. 9 A schematic diagram of the structure of a backlight source control device provided in an embodiment of the present disclosure;

[0030] Fig.10 A schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0033] In today's society, cars, as a means of transportation, are equipped with more and more new technologies to enhance the user's driving experience while meeting the user's travel needs. Head-up display (HUD) projects important driving data on the windshield, allowing users to see real-time driving information without lowering their heads, focusing more on observing road conditions, and to a certain extent reducing the possibility of danger caused by distracted attention.

[0034] In the prior art, the image source of the HUD usually includes a display panel (such as a TFT-LCD liquid crystal display) and a backlight source, and the backlight source provides backlight for the display panel. When providing backlight for the display panel, all light-emitting elements in the backlight source (such as light-emitting diodes (LEDs)) are usually uniformly controlled, for example, all light-emitting elements in the backlight source are lit and their light brightness is the same. The inventors of the present application found in the course of research that during the use of the HUD, lighting all light-emitting elements causes the backlight power consumption to be large, and most of the display area of ​​the display panel is a black area without picture content (perspective area). The light emitted by the light-emitting elements in the backlight source corresponding to the area without picture content will be converted into heat by means of shielding, absorption, refraction, etc., which not only makes the HUD backlight power consumption large and the light utilization rate low, but also makes the display panel more prone to heat and shortens its service life. In response to this problem, the embodiments of the present disclosure provide a backlight control method, which is described below in conjunction with specific embodiments.

[0035] Figure 1 This is a flow chart of the backlight control method provided in the embodiment of the present disclosure. The method can be executed by a backlight control device, which can be implemented in software and / or hardware, and can be configured in an electronic device, such as a head-up display device or a vehicle control system in a vehicle. In addition, the method can be applied to the application scenario of backlight control, and it can be understood that the backlight control method provided in the embodiment of the present disclosure can also be applied in other scenarios.

[0036] Below Figure 1 The backlight control method shown is introduced, and the method is applied in a head-up display device. The method includes the following specific steps:

[0037] S101: Determine a first area of ​​a display panel corresponding to a picture content in a picture to be displayed of a head-up display device.

[0038] The picture to be displayed of the head-up display device is obtained. The picture to be displayed may be a picture represented by a video image signal transmitted to an image source in the head-up display device, that is, a picture to be displayed on a display panel in the image source. The picture to be displayed includes picture content, that is, content to be displayed. Since the picture content usually does not occupy the entire picture, that is, the content to be displayed exists only in a part of the picture position of the picture to be displayed, a first area of ​​the display panel corresponding to the picture content is determined. The first area is used to display the above-mentioned content to be displayed. That is, when the picture to be displayed is displayed on the display panel, the picture content is displayed only in the first area, and the picture content is not displayed in other areas.

[0039] Figure 2 A schematic diagram of a display panel and a backlight source provided in an embodiment of the present disclosure, such as Figure 2 As shown, 21 is a display panel, which may specifically be a TFT-LCD liquid crystal display screen, 22 is a backlight source, and the backlight source 22 includes a plurality of light-emitting elements 23 .

[0040] The content to be displayed includes, for example, telephone number, vehicle speed information, speed limit information, music information and other display contents. Figure 3 A schematic diagram of a display area of ​​a display panel provided in an embodiment of the present disclosure, such as Figure 3 As shown, when the picture to be displayed is displayed on the display panel 21, the above-mentioned content to be displayed is displayed at different display positions of the display panel, wherein 31 is the telephone number, 32 is the vehicle speed information and the speed limit information, and 33 is the music information. The first area of ​​the display panel corresponding to the picture content of the head-up display device is determined, that is, it is determined which areas of the display panel the picture content is distributed on. For example, the areas where the above-mentioned telephone number, vehicle speed information, speed limit information, and music information are located constitute the first area.

[0041] S102, controlling the light-emitting elements in the backlight source corresponding to the first area to turn on, and controlling the light-emitting elements in the backlight source corresponding to the second area to turn off, where the second area is other area in the display area of ​​the display panel except the first area.

[0042] The light emitting elements 23 in the backlight source 22 corresponding to the first area are controlled to be turned on, and the light emitting elements in the backlight source corresponding to the second area are controlled to be turned off, wherein the second area is other areas in the display area of ​​the display panel except the first area.

[0043] The disclosed embodiment determines a first area of ​​the display panel corresponding to the picture content in the picture to be displayed of the head-up display device; controls the light-emitting elements in the backlight source corresponding to the first area to turn on, and controls the light-emitting elements in the backlight source corresponding to the second area to turn off, wherein the second area is other areas in the display area of ​​the display panel except the first area, thereby realizing local backlight control of the backlight source, turning on only some of the light-emitting elements, reducing the backlight power consumption of the head-up display device, increasing the service life of the display panel, improving the light utilization rate of the backlight, improving driving safety, and enhancing the driving experience of the user.

[0044] In some embodiments, determining a first area of ​​a display panel corresponding to picture content in a picture to be displayed of a head-up display device includes: dividing a display area of ​​the display panel to obtain a plurality of sub-areas, wherein the sub-areas correspond one-to-one to light-emitting elements in the backlight source; and determining all sub-areas covered by the picture content in the picture to be displayed as the first area.

[0045] according to Figure 4 The positions of the light emitting elements in the backlight source shown in FIG. 1 are used to divide the display area of ​​the display panel into multiple sub-areas. The specific division is as follows: Figure 5 As shown, the difference in the area of ​​the multiple sub-areas is within a preset range, and the multiple sub-areas correspond to the light-emitting elements in the backlight source one by one, that is, each sub-area has a unique light-emitting element in the backlight source corresponding to the sub-area. All sub-areas covered by the picture content in the picture to be displayed are determined as the first area. Specifically, the picture to be displayed of the head-up display device is obtained, and it is determined which sub-areas in the display area of ​​the display panel the picture content in the picture to be displayed corresponds to, that is, when the picture to be displayed is displayed on the display panel, the picture content in the picture to be displayed will be displayed in these sub-areas, and these sub-areas are determined as the first area, and the first area is determined by all sub-areas covered by the picture content.

[0046] Optionally, controlling the light-emitting elements in the backlight source corresponding to the first area to turn on includes: controlling the light-emitting elements in all sub-areas corresponding to the backlight source in the first area to turn on, and adjusting the light-emitting brightness of the light-emitting elements in the backlight source corresponding to all sub-areas in the first area to a preset first brightness value.

[0047] Specifically, the light-emitting elements in the backlight sources corresponding to all sub-areas in the first area are controlled to turn on, and the light-emitting brightness of the light-emitting elements in the backlight sources corresponding to all sub-areas in the first area are adjusted, i.e., controlled to a preset first brightness value. It can be understood that the preset first brightness value is the same brightness value, i.e., the light-emitting brightness of the light-emitting elements in the backlight sources corresponding to all sub-areas in the first area is adjusted to the same brightness value. Exemplarily, the preset first brightness value can be the maximum brightness value that can be achieved when the light-emitting element is working or an intermediate brightness value that is less than the maximum brightness value.

[0048] For example, in Figure 3 In the display panel 21 shown, all the screen contents to be displayed, that is, the sub-areas corresponding to the telephone number, vehicle speed information, speed limit information, and music information, that is, all the sub-areas contained in the first area, are determined, so as to determine the set of light-emitting elements in the backlight source corresponding to all the sub-areas in the first area, recorded as set A, control all the light-emitting elements in set A to turn on, and adjust the light-emitting brightness of all the light-emitting elements in set A to a preset first brightness value, such as the maximum brightness value of 100%.

[0049] The embodiment of the present disclosure divides the display area of ​​the display panel to obtain multiple sub-areas, and the sub-areas correspond to the light-emitting elements in the backlight source one by one; all sub-areas covered by the picture content are determined as the first area, and all sub-areas of the first area corresponding to the picture content are clarified, so as to control the light-emitting elements in the backlight source corresponding to all sub-areas of the first area to turn on, and adjust the light-emitting brightness of the light-emitting elements in the backlight source corresponding to all sub-areas in the first area to a preset first brightness value, so as to realize local backlight control of the display panel, turn on only part of the light-emitting elements, reduce the backlight power consumption of the head-up display device, and improve the light utilization rate of the backlight. Wherein, while controlling the light-emitting elements in the backlight source corresponding to the first area to turn on and controlling the light-emitting elements in the backlight source corresponding to the second area to turn off, the display panel displays the picture to be displayed and emits image light, and the image light is reflected by the magnifying component (such as a curved reflector) and the reflective imaging part (such as the front windshield of the vehicle) in the head-up display device to reach the eye box area, and when the user's eyes are located in the eye box area, a virtual image located in front of the front windshield can be viewed, and the virtual image is a virtual image formed by magnifying the picture currently displayed by the display panel. Since only the light-emitting elements corresponding to the picture content in the backlight source are turned on and other light-emitting elements are turned off, the contrast of the virtual image projected by the head-up display device is improved.

[0050] Figure 6 A flow chart of a backlight source control method provided in an embodiment of the present disclosure, such as Figure 6 As shown, the method includes the following steps:

[0051] S601: Determine the display content of each sub-area in the first area where the picture content is located.

[0052] S602: Determine a brightness value corresponding to each sub-region in the first region according to display content corresponding to each sub-region in the first region.

[0053] According to the display content corresponding to each sub-region in the first region, a luminance value (ie, brightness value, or gray value) corresponding to each sub-region in the first region is determined.

[0054] Optionally, based on the display content corresponding to each sub-region in the first region, the brightness value corresponding to each sub-region in the first region is determined, including: performing color gamut conversion on each pixel value in the display content corresponding to each sub-region to obtain the brightness value corresponding to each pixel value; calculating the average brightness value of all pixel values ​​corresponding to each sub-region to obtain the brightness value corresponding to each sub-region in the first region.

[0055] Specifically, the picture content covers the first area, and each sub-area in the first area corresponds to a part of the picture content (when the first area includes only one sub-area, the sub-area corresponds to all the picture content in the picture to be displayed), so each sub-area corresponds to at least one pixel value in the picture content. For each sub-area in the first area, a color gamut conversion is performed on each pixel value in the display content corresponding to each sub-area to obtain a brightness value (i.e., brightness value, or gray grayscale value) corresponding to each pixel value, wherein the color gamut conversion refers to the conversion of different RGB spaces, and specifically, the gray grayscale value is calculated as follows:

[0056] gray=0.299*R+0.587*G+0.114*B;

[0057] Calculate the average or weighted average of the brightness values ​​of all pixel values ​​corresponding to each sub-region (the weight of the brightness value of each pixel value can be a preset weight, or the square of the brightness value of the pixel value) to obtain the brightness value corresponding to each sub-region in the first region.

[0058] S603: According to the brightness value corresponding to each sub-region in the first region, adjust the light emitting brightness of the light emitting element in the backlight source corresponding to each sub-region in the first region.

[0059] According to the brightness value corresponding to each sub-region in the first region, the light emitting brightness of the light emitting element in the backlight source corresponding to each sub-region in the first region is adjusted, ie, controlled.

[0060] Optionally, according to the brightness value corresponding to each sub-area in the first area, the luminous brightness of the light-emitting element in the backlight source corresponding to each sub-area in the first area is adjusted, including: mapping the brightness value corresponding to each sub-area in the first area to a register parameter; and according to the register parameter, driving the light-emitting element in the backlight source corresponding to the corresponding sub-area to adjust the luminous brightness.

[0061] Specifically, the brightness value corresponding to each sub-area in the first area is mapped to a register parameter, and the driver chip of the light emitting diode (LED) drives the corresponding light emitting element to emit light according to the register parameter to achieve control of the brightness of the light emitting element according to the register parameter, wherein different register parameters correspond to different LED brightness.

[0062] Alternatively, determine that among all sub-areas of the first area, the sub-area with a brightness value greater than a first threshold is the first display area, and the sub-area with a brightness value greater than a second threshold and less than the first threshold is the second display area; adjust the light-emitting elements in the backlight source corresponding to the first display area to a preset second brightness value, and adjust the light-emitting elements in the backlight source corresponding to the second display area to a preset third brightness value, and the preset second brightness value is greater than or equal to the preset third brightness value.

[0063] Specifically, it is determined that among all sub-regions of the first region, the sub-region whose brightness value is greater than the first threshold is the first display region, and the sub-region whose brightness value is greater than the second threshold and less than the first threshold is the second display region. Also, it is possible to determine that the sub-region in the display region whose brightness value or pixel value is less than or equal to the second threshold is the second region. The light-emitting element in the backlight source corresponding to the first display region is adjusted to a preset second brightness value, and the light-emitting element in the backlight source corresponding to the second display region is adjusted to a preset third brightness value, the preset second brightness value is greater than or equal to the preset third brightness value, and the light-emitting element in the backlight source corresponding to the second region is controlled to be turned off.

[0064] The disclosed embodiment calculates the brightness value corresponding to each sub-region, determines the luminance of the light-emitting element in the backlight source corresponding to the sub-region, and controls the brightness of each light-emitting element separately, thereby improving the flexibility of the backlight source control method.

[0065] In some embodiments, the method also includes: determining whether the display content corresponding to each sub-area in the first display area is low-grayscale picture content; determining the sub-area whose display content is low-grayscale picture content as the first target sub-area; increasing the light transmittance of the first target sub-area, and reducing the luminous brightness of the light-emitting element corresponding to the first target sub-area.

[0066] The vehicle control system or the head-up display device determines whether the display content corresponding to each sub-area in the first display area is low-grayscale picture content, and determines the sub-area whose display content is low-grayscale picture content as the first target sub-area; increases the light transmittance of the first target sub-area, and reduces the luminous brightness of the light-emitting element corresponding to the first target sub-area.

[0067] Optionally, determining whether the display content corresponding to each sub-area in the first display area is low grayscale picture content includes: determining whether the R value in the RGB value of the display content corresponding to each sub-area in the first display area exceeds a second threshold, whether the G value exceeds a third threshold, and whether the B value exceeds a fourth threshold; if the R value does not exceed the second threshold, the G value does not exceed the third threshold, and the B value does not exceed the fourth threshold, determining that the display content is low grayscale picture content.

[0068] Specifically, it is determined whether the R value in the RGB value of the display content corresponding to each sub-area in the first display area exceeds the second threshold, whether the G value exceeds the third threshold, and whether the B value exceeds the fourth threshold. It can be understood that the second threshold, the third threshold, and the fourth threshold can be the same or different; if the R value does not exceed the second threshold, the G value does not exceed the third threshold, and the B value does not exceed the fourth threshold, it is determined that the display content is low grayscale picture content.

[0069] Optionally, judging whether the R value of the RGB value of the display content corresponding to each sub-region in the first display region exceeds the second threshold, whether the G value exceeds the third threshold, and whether the B value exceeds the fourth threshold includes: judging whether the maximum value of the R component of all pixel values ​​corresponding to each sub-region exceeds the second threshold, whether the maximum value of the G component exceeds the third threshold, and whether the maximum value of the B component exceeds the fourth threshold. For example, if sub-region 1 in the first region corresponds to n1 pixel values ​​in the screen content, then the maximum value Rmax1 of the R component, the maximum value Gmax1 of the G component, and the maximum value Bmax1 of the B component in the n1 pixel values ​​are compared with the corresponding thresholds respectively.

[0070] Exemplarily, when the second threshold, the third threshold, and the fourth threshold are the same and the second threshold is 200, if the R value of the RGB value of the display content corresponding to a sub-area in the first display area is 50, the G value is 100, and the B value is 50, and the sizes of 50, 100, 50 and 200 are compared respectively, that is, R value < second threshold, G value < third threshold, B value < fourth threshold, then it is determined that the display content corresponding to the sub-area in the first display area is low grayscale picture content.

[0071] Optionally, increasing the light transmittance of the first target sub-area and reducing the backlight brightness of the first target sub-area include: increasing the light transmittance of the first target sub-area according to a first preset ratio, and reducing the luminous brightness of the light-emitting element corresponding to the first target sub-area according to a second preset ratio, wherein the first preset ratio is determined based on the RGB value of the low grayscale picture content corresponding to the first target sub-area, the second threshold, the third threshold and the fourth threshold.

[0072] Specifically, the vehicle control system or the head-up display device increases the light transmittance of the first target sub-area according to a first preset ratio, and reduces the luminous brightness of the light-emitting element corresponding to the first target sub-area according to a second preset ratio, wherein the first preset ratio is determined based on the RGB value of the low grayscale picture content corresponding to the first target sub-area, the second threshold, the third threshold and the fourth threshold.

[0073] Exemplarily, the light transmittance of the first target sub-area is increased, specifically, the maximum component value in the RGB value corresponding to the first target sub-area is selected, such as the G value of 100 in the above example, and the first preset ratio is determined, such as the first preset ratio = the fourth threshold value / G value = 200 / 100 = 2. For each pixel value RGB in the first target sub-area: the R, G, and B component values ​​in each pixel value RGB are adjusted according to the first preset ratio, that is, the first preset ratio*R value, the first preset ratio*G value, and the first preset ratio*B value are calculated respectively, and a driving signal is generated according to the adjusted pixel value to drive the pixel unit in the display panel corresponding to each pixel value to improve the light transmittance of the first target sub-area, wherein the rotation angle of the liquid crystal molecules corresponding to the pixel unit is controlled according to the driving signal to achieve a change in the transmittance.

[0074] Optionally, the light emitting brightness of the light emitting element corresponding to the first target sub-area may be reduced according to a second preset ratio, thereby reducing the power consumption of the backlight source of the head-up display device.

[0075] Optionally, based on the current luminous brightness of each light-emitting element corresponding to the first target sub-area, the brightness of each light-emitting element is adjusted according to a second preset ratio. The second ratio can be calculated based on the preset display brightness corresponding to the first target sub-area, the current transmittance of the first target sub-area, and the brightness of the light-emitting element corresponding to the first target sub-area before the brightness adjustment. For example, the current required luminous brightness of the light-emitting element corresponding to the first target sub-area can be calculated based on the preset display brightness corresponding to the first target sub-area = the brightness of the light-emitting element corresponding to the first target sub-area * the transmittance of the first target sub-area, and the luminous brightness of the light-emitting element corresponding to the first target sub-area is adjusted accordingly.

[0076] In some embodiments, the method also includes: screening target light-emitting elements whose current light-emitting brightness is lower than a fifth threshold among all light-emitting elements corresponding to the first area; determining the target content to be displayed in the screen content that is located in the sub-area corresponding to the target light-emitting element; and adjusting the color of the target content to be displayed to improve the visibility of the target content to be displayed.

[0077] The vehicle control system or the head-up display device screens the target light-emitting elements whose current light brightness is lower than the fifth threshold value among all the light-emitting elements corresponding to the first area; determines the target content to be displayed in the sub-area corresponding to the target light-emitting element in the picture content; and adjusts the color of the target content to be displayed to improve the visibility of the target content to be displayed.

[0078] Exemplarily, the vehicle control system or the head-up display device screens all the light-emitting elements corresponding to the first area, and the target light-emitting elements whose current luminous brightness is lower than the fifth threshold value. It can be understood that the fifth threshold value can be set according to the system, or can be obtained according to human experience. The target content to be displayed in the sub-area corresponding to the target light-emitting element in the picture content is determined, the color of the target content to be displayed is obtained, and the color of the target content to be displayed is adjusted to improve the visibility of the target content to be displayed, that is, to improve the display brightness of the target content to be displayed. In other words, when the luminous brightness of the light-emitting element is constant, changing the color of the target content to be displayed (for example, increasing the color saturation of the target content to be displayed, or replacing the light gray color that is not easily recognized by the human eye with the green, red and other colors that are easily recognized by the human eye) can enhance the visual effect of the target content to be displayed, making the content to be displayed easier for users to view.

[0079] The disclosed embodiment screens the target light-emitting elements whose current light-emitting brightness is lower than the fifth threshold value among all the light-emitting elements corresponding to the first area; determines the target content to be displayed in the sub-area corresponding to the target light-emitting elements in the picture content; and adjusts the color of the target content to be displayed, thereby improving the visibility of the target content to be displayed and enhancing the user's driving experience.

[0080] In some embodiments, the method further includes: determining the display content in each sub-area of ​​the first area where the screen content is located; determining the sub-area where the display content with low color sensitivity is located as a second target sub-area; and increasing the luminous brightness of the light-emitting element corresponding to the second target sub-area based on the current luminous brightness of the light-emitting element corresponding to the second target sub-area.

[0081] The luminous brightness of the light-emitting element corresponding to the second target sub-area is increased. For example, the operating current of the light-emitting element can be controlled to be greater than a preset current, thereby increasing the luminous brightness of the light-emitting element. The preset current is the recommended operating current of the light-emitting element.

[0082] When the light-emitting elements emit light, their operating currents are all less than the preset current, that is, they are all less than the recommended operating current. In order to improve the visibility of the display content with low color sensitivity, the operating current of the light-emitting elements corresponding to these display contents can be made greater than the preset current. Exemplarily, the color with low sensitivity can be blue. When the color with low sensitivity is blue, the sub-area where the blue content to be displayed in the picture content is located is determined, and the operating current of the light-emitting element corresponding to the sub-area is controlled to be greater than the preset current. The preset current is the recommended operating current of the light-emitting element. The human eye has different sensitivities to different colors. Therefore, when the brightness of the light-emitting elements is the same, the display brightness of the content of different colors perceived by the human eye is different; by increasing the operating current of the light-emitting element corresponding to the second target sub-area where the content to be displayed with low color sensitivity is located, the brightness of the light-emitting element corresponding to the second target sub-area is increased, so that the human eye can visually feel that the display brightness of the content to be displayed with low color sensitivity has been improved, so that the display content with low color sensitivity is easier to be recognized by the human eye.

[0083] In some embodiments, the method further includes: capturing an image in front of the vehicle; identifying a third target sub-region in the image that exceeds a preset brightness; and increasing the luminous brightness of the light-emitting element corresponding to the third target sub-region.

[0084] Figure 7 A schematic diagram of the display content of the head-up display device provided in the embodiment of the present disclosure, such as Figure 7 As shown, a virtual image formed by a head-up display device is displayed in the scene in front of the vehicle, and information such as a phone number, vehicle speed, and a navigation map are displayed in the virtual image. The image in front of the vehicle, that is, the image of the scene in front of the vehicle, can be acquired by an image acquisition device, and the image acquisition device can specifically be a camera, a sensor, a driving recorder, etc. Since the image brightness reflects the ambient light brightness of the scene in front, for example, when the body of the front vehicle is a light color such as a white car, the rear part of the front vehicle body reflects the ambient light, resulting in a higher image brightness in the area where the front vehicle is located in the image, so the third target sub-area in the image that exceeds the preset brightness can be identified. When there is display content at the virtual image position corresponding to the third target sub-area in the virtual image, the luminous brightness of the light-emitting element corresponding to the third target sub-area is increased, thereby increasing the display brightness of the display content and improving the visibility of the display content.

[0085] Optionally, identifying a third target sub-region in the image that exceeds a preset brightness, and increasing the luminous brightness of a light-emitting element corresponding to the third target sub-region, includes: identifying an image block in the image that exceeds a preset brightness, and acquiring a first coordinate of the image block; mapping the image block to a virtual image projected by the head-up display device according to the first coordinate of the image block, and determining a second coordinate of the image block in the virtual image; determining a third target sub-region corresponding to the image block on the display panel according to the second coordinate of the image block; and when the third target sub-region corresponding to the image block on the display panel belongs to the first region, increasing the luminous brightness of the light-emitting element corresponding to the third target sub-region.

[0086] Specifically, the vehicle control system or the head-up display device identifies an image block in the image that exceeds a preset brightness. For example, the image block may be Figure 7 The image block represented by the white car in the middle, according to the pixel position of the white car in the image, obtains the first coordinate of the white car, that is, the coordinate of the white car in the coordinate space of the image acquisition device. According to the first coordinate of the white car, the white car is mapped to the virtual image projected by the head-up display device, and the second coordinate of the white car in the virtual image, that is, the coordinate of the white car in the coordinate space of the head-up display device, is determined. Since the installation positions of the image acquisition device and the head-up display device do not overlap, the coordinate origins of the image acquisition device coordinate space and the head-up display device coordinate space do not overlap, and it is necessary to map the first coordinate of the white car to the head-up display device coordinate space. Among them, the first coordinate and the second coordinate can both be two-dimensional coordinates, for example, the z-axis is parallel to the length direction of the vehicle body, the x-axis is parallel to the width direction of the vehicle body, and the direction perpendicular to the z-axis and the x-axis is the y-axis, and the coordinate space of the image acquisition device is established with the center of the image acquisition device as the coordinate origin, and the coordinate space of the head-up display device is established with the center of the head-up display device as the coordinate origin, then the first coordinate and the second coordinate can both be two-dimensional coordinates in the form of (x, y). Optionally, the image captured by the image acquisition device only includes the scene in front of the vehicle, and does not include the virtual image formed in the scene in front of the vehicle. According to the second coordinate of the white car, the third target sub-area corresponding to the white car on the display panel is determined. Since the virtual image is an image magnified from the image displayed on the display panel, it is possible to determine which sub-area on the display panel the second coordinate corresponds to. Figure 7As shown, a triangle prompt is displayed behind the white car body in the virtual image and overlaps with the white car, that is, there is display content at the virtual image position corresponding to the third target sub-region in the virtual image, so the third target sub-region belongs to the first region, therefore, the luminous brightness of the light-emitting element corresponding to the third target sub-region is increased, thereby increasing the display brightness of the triangle prompt and improving visibility. It can be understood that when the third target sub-region corresponding to the image block on the display panel does not belong to the first region, the luminous brightness of the light-emitting element corresponding to the third target sub-region is controlled to remain unchanged, that is, the light-emitting element corresponding to the third target sub-region is controlled to be turned off.

[0087] Optionally, when mapping the image block, the coordinates of the boundary of the image block may be selected as the coordinates of the image block for mapping, so as to reduce the amount of calculation and improve the calculation processing speed.

[0088] Optionally, increasing the light emitting brightness of the light emitting element corresponding to the third target sub-region includes: controlling the operating current of the light emitting element corresponding to the third target sub-region to be greater than a preset current.

[0089] Specifically, when the light-emitting element emits light, its operating current is less than the preset current, that is, less than the recommended operating current. The operating current of the light-emitting element corresponding to the third target sub-region is controlled to be greater than the preset current, thereby increasing the light brightness of the light-emitting element corresponding to the third target sub-region. For example, Figure 8 As shown, the operating current of the light-emitting element corresponding to the third target sub-region where the triangle prompt is located is increased, even if the operating current of the light-emitting element corresponding to the third target sub-region where the triangle prompt is located exceeds the preset current and does not exceed the maximum operating current, thereby increasing the brightness of the triangle prompt.

[0090] It can be understood that the time during which the working current of the light-emitting element is greater than the preset current needs to be less than or equal to the preset time to ensure that when the working current of the light-emitting element is greater than the preset current, the temperature of the display panel is less than or equal to the preset temperature, thereby improving the service life of the display panel. When the temperature of the display panel is greater than the preset temperature, the working current of the light-emitting element is controlled to be less than or equal to the preset current to reduce the brightness value of the light-emitting element and prevent the display panel from being burned by high temperature. The preset current can be the recommended working current of the light-emitting element.

[0091] Fig. 9 The backlight control device provided in the embodiment of the present disclosure is a schematic diagram of the structure of the backlight control device. The backlight control device can be configured in the head-up display device or the vehicle control system in the vehicle as described in the above embodiment. The backlight control device provided in the embodiment of the present disclosure can execute the processing flow provided in the backlight control method embodiment, such as Fig. 9As shown, the backlight source control device 90 includes: a determination module 91 and a control module 92; wherein the determination module 91 is used to determine the first area of ​​the display panel corresponding to the picture content in the picture to be displayed of the head-up display device; the control module 92 is used to control the light-emitting elements in the backlight source corresponding to the first area to turn on, and control the light-emitting elements in the backlight source corresponding to the second area to turn off, and the second area is the other area in the display area of ​​the display panel except the first area.

[0092] Optionally, the determination module 91 is further used to divide the display area of ​​the display panel to obtain multiple sub-areas, and the sub-areas correspond one-to-one to the light-emitting elements in the backlight source; all sub-areas covered by the picture content in the picture to be displayed are determined as the first area.

[0093] Optionally, the control module 92 is further used to control the light-emitting elements in the backlight sources corresponding to all sub-areas in the first area to turn on, and adjust the light brightness of the light-emitting elements in the backlight sources corresponding to all sub-areas in the first area to a preset first brightness value.

[0094] Optionally, the backlight control device 90 also includes: an adjustment module 93; a determination module 91, which is also used to determine the display content of each sub-area in the first area where the picture content is located; and determine the brightness value corresponding to each sub-area in the first area according to the display content corresponding to each sub-area in the first area; the adjustment module 93 is used to adjust the luminous brightness of the light-emitting elements in the backlight source corresponding to each sub-area in the first area according to the brightness value corresponding to each sub-area in the first area.

[0095] Optionally, the determination module 91 is also used to perform color gamut conversion on each pixel value in the display content corresponding to each sub-region to obtain a brightness value corresponding to each pixel value; and calculate the average brightness value of all pixel values ​​corresponding to each sub-region to obtain the brightness value corresponding to each sub-region in the first region.

[0096] Optionally, the adjustment module 93 is also used to map the brightness value corresponding to each sub-area in the first area into a register parameter; according to the register parameter, drive the light-emitting element in the backlight source corresponding to the corresponding sub-area to adjust the light-emitting brightness; or, determine that among all the sub-areas of the first area, the sub-area with a brightness value greater than a first threshold is the first display area, and the sub-area with a brightness value greater than a second threshold and less than the first threshold is the second display area; adjust the light-emitting element in the backlight source corresponding to the first display area to a preset second brightness value, and adjust the light-emitting element in the backlight source corresponding to the second display area to a preset third brightness value, and the preset second brightness value is greater than or equal to the preset third brightness value.

[0097] Optionally, the adjustment module 93 is also used to determine whether the display content corresponding to each sub-area in the first display area is low-grayscale picture content; determine the sub-area whose display content is low-grayscale picture content as the first target sub-area; increase the light transmittance of the first target sub-area, and reduce the luminous brightness of the light-emitting element corresponding to the first target sub-area.

[0098] Optionally, the adjustment module 93 is also used to determine whether the R value of the RGB value of the display content corresponding to each sub-area in the first display area exceeds the second threshold, whether the G value exceeds the third threshold, and whether the B value exceeds the fourth threshold; if the R value does not exceed the second threshold, the G value does not exceed the third threshold, and the B value does not exceed the fourth threshold, it is determined that the display content is low grayscale picture content.

[0099] Optionally, the adjustment module 93 is also used to increase the light transmittance of the first target sub-area according to a first preset ratio, and reduce the luminous brightness of the light-emitting element corresponding to the first target sub-area according to a second preset ratio, and the first preset ratio is determined based on the RGB value of the low grayscale picture content corresponding to the first target sub-area, the second threshold, the third threshold and the fourth threshold.

[0100] Optionally, the adjustment module 93 is also used to screen out target light-emitting elements whose current light brightness is lower than a fifth threshold value among all light-emitting elements corresponding to the first area; determine the target content to be displayed in the screen content that is located in the sub-area corresponding to the target light-emitting element; and adjust the color of the target content to be displayed to improve the visibility of the target content to be displayed.

[0101] Optionally, the backlight control device 90 also includes: an increasing module 94, which is also used to determine the display content in each sub-area of ​​the first area where the picture content is located; determine the sub-area where the display content with low color sensitivity is located as the second target sub-area; and increase the luminous brightness of the light-emitting element corresponding to the second target sub-area based on the current luminous brightness of the light-emitting element corresponding to the second target sub-area.

[0102] Optionally, the increasing module 94 is further used to capture an image in front of the vehicle; identify a third target sub-region in the image that exceeds a preset brightness; and increase the luminous brightness of the light-emitting element corresponding to the third target sub-region.

[0103] Optionally, the increasing module 94 is further used to identify an image block in the image that exceeds a preset brightness, and obtain a first coordinate of the image block; based on the first coordinate of the image block, map the image block to a virtual image projected by the head-up display device, and determine a second coordinate of the image block in the virtual image; based on the second coordinate of the image block, determine a third target sub-area corresponding to the image block on the display panel; and when the third target sub-area corresponding to the image block on the display panel belongs to the first area, increase the luminous brightness of the light-emitting element corresponding to the third target sub-area.

[0104] Optionally, the increasing module 94 is further used to control the operating current of the light-emitting element corresponding to the third target sub-region to be greater than a preset current.

[0105] Fig. 9 The backlight source control device of the illustrated embodiment can be used to execute the technical solution of the above-mentioned backlight source control method embodiment, and its implementation principle and technical effect are similar and will not be described in detail here.

[0106] Fig.10 The electronic device provided by the embodiment of the present disclosure can execute the processing flow provided by the backlight source control method embodiment, such as Fig.10 As shown, the electronic device 100 includes: a memory 101, a processor 102, a computer program and a communication interface 103; wherein the computer program is stored in the memory 101 and is configured so that the processor 102 executes the backlight control method as described above.

[0107] In addition, an embodiment of the present disclosure further provides a computer-readable storage medium on which a computer program is stored. The computer program is executed by a processor to implement the backlight control method described in the above embodiment.

[0108] In addition, an embodiment of the present disclosure further provides a computer program product, which includes a computer program or instructions, and when the computer program or instructions are executed by a processor, the backlight control method as described above is implemented.

[0109] It should be noted that the computer-readable medium disclosed above may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, device or device. In the present disclosure, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, in which a computer-readable program code is carried. This propagated data signal may take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. The computer readable signal medium may also be any computer readable medium other than a computer readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. The program code contained on the computer readable medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0110] In some embodiments, the client and the server may communicate using any currently known or future developed network protocol such as HTTP (HyperText Transfer Protocol), and may be interconnected with any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network ("LAN"), a wide area network ("WAN"), an internet (e.g., the Internet), and a peer-to-peer network (e.g., an ad hoc peer-to-peer network), as well as any currently known or future developed network.

[0111] The computer-readable medium may be included in the electronic device, or may exist independently without being incorporated into the electronic device.

[0112] The computer-readable medium carries one or more programs. When the one or more programs are executed by the electronic device, the electronic device:

[0113] Determine a first area of ​​a display panel corresponding to a picture content in a picture to be displayed of a head-up display device;

[0114] The light-emitting elements in the backlight source corresponding to the first area are controlled to be turned on, and the light-emitting elements in the backlight source corresponding to the second area are controlled to be turned off, and the second area is other areas in the display area of ​​the display panel except the first area.

[0115] In addition, the electronic device may also execute other steps in the backlight source control method described above.

[0116] Computer program code for performing the operations of the present disclosure may be written in one or more programming languages ​​or a combination thereof, including, but not limited to, object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0117] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0118] The units involved in the embodiments described in the present disclosure may be implemented by software or hardware, wherein the name of a unit does not, in some cases, limit the unit itself.

[0119] The functions described above herein may be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), and the like.

[0120] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0121] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0122] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A backlight control method, applied in a head-up display device, characterized in that: The method comprises: Determine a first area of ​​a display panel corresponding to a picture content in a picture to be displayed of a head-up display device; The light-emitting elements in the backlight source corresponding to the first area are controlled to be turned on, and the light-emitting elements in the backlight source corresponding to the second area are controlled to be turned off, wherein the second area is other area in the display area of ​​the display panel except the first area.

2. The method according to claim 1, characterized in that: Determining a first area of ​​a display panel corresponding to a picture content in a picture to be displayed of a head-up display device includes: Dividing the display area of ​​the display panel to obtain a plurality of sub-areas, wherein the sub-areas correspond one-to-one to the light-emitting elements in the backlight source; All sub-areas covered by the picture content in the picture to be displayed are determined as the first area.

3. The method according to claim 2, characterized in that Controlling the light-emitting elements in the backlight source corresponding to the first area to turn on includes: The light-emitting elements in the backlight sources corresponding to all the sub-areas in the first area are controlled to turn on, and the light-emitting brightness of the light-emitting elements in the backlight sources corresponding to all the sub-areas in the first area is adjusted to a preset first brightness value.

4. The method according to claim 1, characterized in that: The method further comprises: Determine the display content of each sub-area in the first area where the picture content is located; Determine a brightness value corresponding to each sub-region in the first region according to display content corresponding to each sub-region in the first region; According to the brightness value corresponding to each sub-area in the first area, the light emitting brightness of the light emitting element in the backlight source corresponding to each sub-area in the first area is adjusted.

5. The method according to claim 4, characterized in that Determining, according to display content corresponding to each sub-region in the first region, a brightness value corresponding to each sub-region in the first region, includes: Performing color gamut conversion on each pixel value in the display content corresponding to each sub-region to obtain a brightness value corresponding to each pixel value; An average of the brightness values ​​of all pixel values ​​corresponding to each sub-region is calculated to obtain a brightness value corresponding to each sub-region in the first region.

6. The method according to claim 4, characterized in that According to the brightness value corresponding to each sub-area in the first area, adjusting the light emitting brightness of the light emitting element in the backlight source corresponding to each sub-area in the first area includes: Mapping a brightness value corresponding to each sub-region in the first region to a register parameter; According to the register parameters, the light-emitting elements in the backlight source corresponding to the corresponding sub-area are driven to adjust the light brightness; or, Determine, among all sub-regions of the first region, that a sub-region whose brightness value is greater than a first threshold is a first display region, and that a sub-region whose brightness value is greater than a second threshold and less than the first threshold is a second display region; The light-emitting elements in the backlight source corresponding to the first display area are adjusted to a preset second brightness value, and the light-emitting elements in the backlight source corresponding to the second display area are adjusted to a preset third brightness value, wherein the preset second brightness value is greater than or equal to the preset third brightness value.

7. The method according to claim 6, characterized in that The method further comprises: Determining whether the display content corresponding to each sub-area in the first display area is low grayscale picture content; Determine a sub-region whose display content is low grayscale image content as a first target sub-region; The light transmittance of the first target sub-region is increased, and the light emitting brightness of the light emitting element corresponding to the first target sub-region is reduced.

8. The method according to claim 7, characterized in that Determining whether the display content corresponding to each sub-area in the first display area is low grayscale picture content includes: Determine whether the R value of the RGB value of the display content corresponding to each sub-area in the first display area exceeds a second threshold, whether the G value exceeds a third threshold, and whether the B value exceeds a fourth threshold; If the R value does not exceed the second threshold, the G value does not exceed the third threshold, and the B value does not exceed the fourth threshold, it is determined that the displayed content is low grayscale picture content.

9. The method according to claim 8, characterized in that Increasing the light transmittance of the first target sub-area and reducing the backlight brightness of the first target sub-area includes: The light transmittance of the first target sub-area is increased according to a first preset ratio, and the luminous brightness of the light-emitting element corresponding to the first target sub-area is reduced according to a second preset ratio, wherein the first preset ratio is determined based on the RGB value of the low grayscale picture content corresponding to the first target sub-area, the second threshold, the third threshold and the fourth threshold.

10. The method according to claim 1, characterized in that The method further comprises: Filtering target light-emitting elements whose current light-emitting brightness is lower than a fifth threshold value among all light-emitting elements corresponding to the first area; Determine the target content to be displayed in the picture content and located in the sub-region corresponding to the target light-emitting element; The color of the target content to be displayed is adjusted to improve the visibility of the target content to be displayed.

11. The method according to claim 1, characterized in that: The method further comprises: Determine the display content of each sub-area in the first area where the picture content is located; Determine the sub-region where the display content with low color sensitivity is located as the second target sub-region; Based on the current luminous brightness of the luminous element corresponding to the second target sub-area, the luminous brightness of the luminous element corresponding to the second target sub-area is increased.

12. The method according to claim 1, characterized in that The method further comprises: Collecting images in front of the vehicle; identifying a third target sub-region in the image that exceeds a preset brightness; The light emitting brightness of the light emitting element corresponding to the third target sub-region is increased.

13. The method according to claim 12, characterized in that Identifying a third target sub-region in the image that exceeds a preset brightness, and increasing the light emitting brightness of a light emitting element corresponding to the third target sub-region, includes: Identify an image block in the image that exceeds a preset brightness, and obtain a first coordinate of the image block; According to the first coordinate of the image block, mapping the image block to a virtual image projected by the head-up display device, and determining a second coordinate of the image block in the virtual image; determining, according to the second coordinate of the image block, a third target sub-region corresponding to the image block on the display panel; In a case where a third target sub-region corresponding to the image block on the display panel belongs to the first region, the light emitting brightness of the light emitting element corresponding to the third target sub-region is increased.

14. The method according to any one of claims 12-13, characterized in that: Increasing the light emitting brightness of the light emitting element corresponding to the third target sub-region includes: The operating current of the light emitting element corresponding to the third target sub-region is controlled to be greater than a preset current.

15. A backlight source control device, used in a head-up display device, characterized in that: The device comprises: A determination module, configured to determine a first area of ​​a display panel corresponding to a picture content in a picture to be displayed of a head-up display device; The control module is used to control the light-emitting elements in the backlight source corresponding to the first area to turn on, and control the light-emitting elements in the backlight source corresponding to the second area to turn off, wherein the second area is other areas in the display area of ​​the display panel except the first area.

16. An electronic device, characterized in that: include: Memory; processor; as well as Computer programs; The computer program is stored in the memory and is configured to be executed by the processor to implement the method according to any one of claims 1 to 14.

17. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 14 is implemented.

Images